|
07-26-2023, 08:23 PM | #1 |
Senior Member
Join Date: Feb 2008
Location: Georgetown, Indiana (close to Louisville, KY)
Posts: 761
Likes: 494
Liked 224 Times in 103 Posts
|
Flat tappet lifter failure
Curious how many have had this problem regardless of reasoning in last 5 years or so.
Last edited by Terry Cain; 07-27-2023 at 06:49 PM. |
07-27-2023, 01:18 AM | #2 |
VIP Member
Join Date: Jun 2009
Location: Boulder City, Nevada 89005
Posts: 2,546
Likes: 2,244
Liked 1,887 Times in 580 Posts
|
Re: Flat tappet lifter failure
My boy has had issues that have cost engines while
running the expensive billet stuff.
__________________
John Irving 741 Stock 741 Super Stock |
07-27-2023, 09:34 AM | #3 |
Senior Member
Join Date: Sep 2007
Posts: 574
Likes: 6
Liked 44 Times in 22 Posts
|
Re: Flat tappet lifter failure
Spring pressure and lifter diameter are factors as well. Stock lifters are good at 380 lb. open and .921" diameter. 500-550 lb. open are another story.
|
Liked |
07-27-2023, 08:51 PM | #4 |
Member
Join Date: Dec 2018
Location: Massachusetts
Posts: 159
Likes: 178
Liked 213 Times in 84 Posts
|
Re: Flat tappet lifter failure
I lost one cam lobe, I noticed it after about 100 runs. I’m not sure when it went away. Most likely caused by lack of oiling at low rpm. From what I’ve been told the tool steel lifter, cast cam combination is only good for maybe 200 runs if you’re lucky. Go fast stuff can be a P.I.T.A.
__________________
George Mirza D/SA 1236 ‘71 Duster 340 Last edited by Gmirza; 07-28-2023 at 07:47 PM. |
07-27-2023, 09:30 PM | #5 | |
Senior Member
Join Date: Dec 2001
Location: Elysburg, Pa
Posts: 696
Likes: 285
Liked 242 Times in 94 Posts
|
Re: Flat tappet lifter failure
Quote:
|
|
07-28-2023, 04:06 PM | #6 | |
Junior Member
Join Date: Jan 2018
Location: Colorado
Posts: 79
Likes: 214
Liked 94 Times in 24 Posts
|
Re: Flat tappet lifter failure
Quote:
|
|
07-28-2023, 07:46 PM | #7 | |
Member
Join Date: Dec 2018
Location: Massachusetts
Posts: 159
Likes: 178
Liked 213 Times in 84 Posts
|
Re: Flat tappet lifter failure
Quote:
I’m not sure. I didn’t check them.
__________________
George Mirza D/SA 1236 ‘71 Duster 340 Last edited by Gmirza; 07-28-2023 at 07:51 PM. |
|
07-29-2023, 12:25 PM | #8 |
Member
Join Date: May 2002
Location: Green Creek (Tryon) North Carolina
Posts: 330
Likes: 69
Liked 99 Times in 21 Posts
|
Re: Flat tappet lifter failure
Terry you have a PM
|
10-05-2023, 08:11 AM | #9 |
Senior Member
Join Date: Feb 2008
Location: Georgetown, Indiana (close to Louisville, KY)
Posts: 761
Likes: 494
Liked 224 Times in 103 Posts
|
Re: Flat tappet lifter failure
|
10-05-2023, 09:09 AM | #10 | |
VIP Member
Join Date: Oct 2002
Location: On a hilltop in Pa.
Posts: 4,278
Likes: 3,188
Liked 6,958 Times in 1,569 Posts
|
Re: Flat tappet lifter failure
Quote:
__________________
Billy Nees 1188 STK, SS What is "NORMAL"??? |
|
Liked |
|
|